I've eaten there a number of times in my four visits to the resort. I think it's low-average. It's the best of the options at Valle Nevado but there are endless better dining options in the northern hemisphere. The food at the Gran Hotel at Termas de Chillan is much better than Valle Nevado but you'd never confuse it with the Seafood Buffet in the Snow Park Lodge or brunch at the Stein Ericsson Lodge at Deer Valley.
Some of my lunch favorites:
The sushi place by the Whistler gondola.
Meat pies in the New Zealand ski field cafeteria lines
The bar at Monarch (southwestern fare)
Gwyn's High Alpine at Snowmass
Deer Valley cafeterias
La Marmita de Pericles at La Parva (fondue)